02027_ thread Pool Exercise: Returns the result of a two number addition

1, requirements: Through the thread pool thread object, using the callable interface to complete the two number sum operation.

2, the Code implementation:

(1) Callable Interface implementation class

1 Importjava.util.concurrent.Callable;2 3  Public classMycallableImplementsCallable<integer> {4     //member Variables5     intx = 5;6     inty = 3;7 8     //Construction Method9      Publicmycallable () {Ten     } One  A      PublicMycallable (intXinty) { -          This. x =x; -          This. y =y; the     } -  - @Override -      PublicInteger Call ()throwsException { +         returnX +y; -     } +}

(2) Test class

1 Importjava.util.concurrent.ExecutionException;2 ImportJava.util.concurrent.ExecutorService;3 Importjava.util.concurrent.Executors;4 Importjava.util.concurrent.Future;5 6  Public classThreadPoolDemo {7      Public Static voidMain (string[] args)throwsInterruptedexception,8 executionexception {9         //To create a thread pool objectTenExecutorservice ThreadPool = Executors.newfixedthreadpool (2); One  A         //Create a callable interface subclass object -         //mycallable C = new mycallable (); -Mycallable C =NewMycallable (100, 200); themycallable C2 =NewMycallable (10, 20); -  -         //gets the thread in the thread pool, calls the call () method in the callable interface subclass object, and completes the sum operation -         //<Integer> future<integer> Submit (callable<integer> Task) +         //Future Result Object -future<integer> result =Threadpool.submit (c); +         //The result type returned by the Get method for this future AInteger sum =result.get (); atSystem.out.println ("sum=" +sum); -  -         //Re-demo -result =threadpool.submit (C2); -sum =result.get (); -System.out.println ("sum=" +sum); in         //Close thread pool (can not be closed) -  to     } +}

3. Operation Result:

　　

　　

l Callable Interface implementation class

02027_ thread Pool Exercise: Returns the result of a two number addition